Gas dynamics in an inertial confinement fusion reactor involves extremely high energy and temperatures. In those temperature range, gaseous radiation can be critical to the dynamics phenomenon. This study presents a method that couples an one-dimensional radiation transfer model with an Eulerian gas dynamics code for HYLIFE-II studies. The results reveals that radiation modifies the shock interaction pattern drastically. Although there are more sophisticated methods of computing one-dimensional radiation transport than the model implemented in current study, the methodology used here are extendible to two-dimensional schemes.